BrettHHS2010

Hey guys, I have a 1996 Z28 and when i go to start the car the first time on a given day it will not start. I can crank forever and it wont start. I turn the car off and let it sit for like three seconds, fires right up.

I was thinking fuel pump, I recently replaced the optispark, coil, timing chain, icm, and maf. This was all from another issue and i drove it for about 300 miles without this cold start issue. If anyone can help please let me know.

BrettHHS2010

Still having issue... if i let the car sit with the key on she will fire right up... i went out and checked the pressue at the fuel pressure regulator the other day before i tried to start it and there was none... i dont think a pump will act like this. any advice or input would be great.
Thanks guys,
Brett

RamAir95TA

How did you check the fuel pressure?

Checking pressure directly at the regulator is impossible - there's no way to do so, unless you checked pressure at the fuel rail via the Schrader valve? You say you had zero pressure - was that with the key on, engine off? Can you hear the fuel pump running?

BrettHHS2010

I checked the fuel pressure at that shrader valve. It was with the car off. I read somewhere that the car should maintain a pressure of 30 psi in the lines at all times. Whether that is true or not im not sure. If i turn the key i do hear the pump kick on, prime and shut off after the three second prime. In order for it to start right away i have to let it sit in the on position for 5-8 seconds, or cycle the key a few times.